Malicious PDF — malware analysis report

Static analysis result for SHA-256 21d5b46827eff8eb…

MALICIOUS

PDF

58.8 KB Created: 2020-08-24 02:15:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d764c2606fbc1e16bc825c6f6c3fa835 SHA-1: 7ebaf681467a2776d5c9d5c9f62ef878205a5b4c SHA-256: 21d5b46827eff8eb4004a75e12b0c5b979294e6c2e0aef1685aad4a9da2fbe69
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, identified by the heuristic PDF_MALICIOUS_REDIRECTOR_LINK. The document body, though heavily obfuscated, contains the same URL, suggesting it is the primary lure. The ML classifier also flagged this PDF with high confidence. The overall attack pattern is a phishing lure disguised as helpful content to redirect the user to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/pify?keyword=logo+quiz+ultimate+answers+level+41
    • http://files.davidleakeesq.com/uploads/1/3/0/8/130814874/vibew.pdf
    • http://metigikiw.adventuresatyourdoorstep.com/uploads/1/3/0/7/130740572/9585232.pdf
    • https://cdn.shopify.com/s/files/1/0437/6153/3089/files/xibafabopejegakewiw.pdf
    • https://cdn.shopify.com/s/files/1/0439/5050/6142/files/padukazanu.pdf
    • https://cdn.shopify.com/s/files/1/0432/5464/4894/files/furadogafepuzi.pdf
    • https://cdn.shopify.com/s/files/1/0434/5082/6905/files/delex.pdf
    • https://cdn.shopify.com/s/files/1/0432/2911/8627/files/yonder_come_day_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0434/2264/6422/files/atomic_habits_cheat_sheets.pdf
    • https://cdn.shopify.com/s/files/1/0435/8648/6440/files/zadaxezawumasuzolunixodeg.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009b19.bin
1fd9de1e6b660ac014b8f6558ee2fac76a009b23429f02225d854d74e56ee747		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9B19 5416 bytes
font_01_sfnt_off0000ad95.bin
26091c9a0b9e147b7d414e0aceec63b92f3a8e75e6aa81ffaafaea706af5b4c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAD95 15856 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.